I've been playing as France, and I'm up to the 1450s. So far, things are progressing at a rate that by 1492 I could expect to have the territory France actually had in 1492. Some interesting things though...an alliance of Mediterranean nations ganged up on Turkey and took several of their provinces. Byzantium is still thriving and has taken 2 additional provinces. Siena has taken Fierenze, and all of the Papal state provinces but Rome becoming the dominant force in Italy. The Iberian peninsula is a mess and has lost territory to the Moslem nations rather than gaining.